Home / 1,228.26-1,842.94-651

Finding the Fourth Proportional to 1,228.26, 1,842.94 and 651

Calculator

Solution

The fourth proportional to 1,228.26, 1,842.94 and 651 is: 976.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,228.26 : 1,842.94 = 651 : x
  2. Step 2: Convert to fraction form
    1,228.26/1,842.94 = 651/x
  3. Step 3: Cross multiply
    1,228.26x = 1,842.94 × 651
  4. Step 4: Simplify right side
    1,228.26x = 1,199,753.94
  5. Step 5: Solve for x
    x = 1,199,753.94/1,228.26
  6. Step 6: Final answer
    x = 976.79

Related Problems

Find fourth proportional to 614.13, 921.47 and 325.50
Half scale
Find fourth proportional to 2,456.52, 3,685.88 and 1,302
Double scale
Find fourth proportional to 1,229.26, 1,844.44 and 652
Similar ratio
Find fourth proportional to 1,842.39, 2,764.41 and 976.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.